The Spear of Atlantis by Andrew McDermott, Headline

This is the 14th book in the series featuring world famous archaeologist Nina Wilde, her husband, Eddie Chase, doting dad of seven-year-old Macy. Here the trio are on a huge luxury liner, the Atlantia, owned by the Emir of a wealthy Arab state. Nina is due to lecture on her specialist subject, Atlantis. A heist prevents that, causes murder and mayhem, leading to fast and furious intercontinental violence and treachery. Lovers of the genre will lap it up.